Damn, that Megaton concept art is sweet. I've seen it before but I'm always awestruck. That, and Vault concept by the same artist (Adam Adamowicz, I believe) are breath-taking and (literally) paint a picture of what FO3 could have been. People may hate on it, but FO3 had great design most of time. Even though parts of it may be against lore or even logic itself (such as Megaton here - hauling airplane parts which weigh tons miles across rocky and harsh desert just to build a city around an undetonated nuke? What?), from weapons to scenery, much of it was well-designed, even though it was often ill-presented or poorly used.